Search results for “analyse des risques”

The Polarimeter - How it works

This second video about the polarimeter is all about how it works. In particular, the polarization foils, polarization and analyzer are named, considered and described. Furthermore, it is discussed how the oscillation plane of linearly polarized light changes. Original: "Wolfgang Dukorn" Original:

The Move of Homo Sapiens’ into Tropical Forests

For more Science Videos: https://lt.org/ * In popular culture as in traditional archaeology, the tropical forest has been assumed to represent an environment inhospitable to humans. In this video, PATRICK ROBERTS challenges this view, demonstrating not only that Homo sapiens moved into tropical fore

08 Decomposition of a pure substance

Pure substances can be analysed (broken down) by chemical reactions. In the process, elements are created. The important experiment of Hoffman's decomposition apparatus is presented and the proof for hydrogen and oxygen gas is shown. The results of the experiment are part of the attendance phase at

CO2 Storage in the Plant and Soil System

For more Science Videos: https://lt.org/ * The accumulation of carbon dioxide (CO2) in the Earth’s atmosphere is responsible for one of the most pressing problems of our age, global warming. In this video, SUSAN TRUMBORE analyses the key role that plant and soil systems play in the carbon cycle in o

Sex In Space: How Does It Work?

Is sex in space possible? Concerning future long space expeditions this question is becoming one of the most popular, fielded by astronauts. In this video we explain how sex in space could work and the challenges that would be faced in zero gravity. The topic of sex in space may sound taboo, but we,